Hate to burst your bubble, but I have a sneaking suspicion that your 'giraffe' is actually the shadow of the cam on its pole. I saved these couple of pics a few weeks ago when I also wondered what the shadows were, until I realised ......

The shadow on the left is the light and on the right corner is the cam.

I also took this pic at Orpen and you can see where they are in relation to the waterhole. You can't get quite the same angle as the cam gives, as the camp looks on to the waterhole from the side.